Specifications

BHT_ReadBarEx

Description

Read out data from the barcode buffer and encodes it into the specified data format.

If the length of the read data is shorter than the specified maximum data length (dwBarLen), the excess

part will be filled with 0s.

If barcode reading is disabled, an error (ERROR_INVALID_HANDLE) will be caused.

Syntax:

DWORD BHT_ReadBarEx (

DWORD dwDataType,

LPVOID lpBuffer,

DWORD dwBarLen,

DWORD* pdwActualBarLen )

Parameters

dwDataType

[in] Encoding format

READ_CODE_BINARY : binary data (no encoding)

READ_CODE_UNICODE : unicode data

lpBuffer

[in] Starting address of the read data in the storage buffer

dwBarLen

[in] Maximum read data length (maximum length of data to be read out)

pdwActualBarLen

[out] Length of data read

Return value

Error code Meaning

ERROR_SUCCESS Successful completion

ERROR_INVALID_HANDLE Barcode device file not opened.

ERROR_INVALID_PARAMETER

The specified encoding is wrong.

No storage address specified.